1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
bearhunter [10]
3 years ago
8

Find the coordinates of the midpoint for line segment JK if J(-9, 5) and K(21.-7)

Mathematics
1 answer:
Trava [24]3 years ago
8 0

Answer:

(6, -1)

Step-by-step explanation:

The coordinates of the midpoint of a line is [(x₁ + x₂)/2, (y₁ + y₂)/2]. For the given line, JK where J = (-9, 5) = (x₁, y₁) and K = (21,-7) = (x₂, y₂).

So [(x₁ + x₂)/2, (y₁ + y₂)/2]

= [(-9 + 21)/2, (5 + (-7))/2]

= [12/2, (5 - 7)/2]

= [12/2, -2/2]

= (6, -1)

You might be interested in
Hi I need help please.
trasher [3.6K]

Answer:

60x36x120

Step-by-step explanation:

Because the scale factor is 1:12, you multiply the dimension of the building by 12.

3 0
2 years ago
) One year, professional sports players salaries averaged $1.5 million with a standard deviation of $0.9 million. Suppose a samp
Nutka1998 [239]

Answer:

Probability that the average salary of the 400 players exceeded $1.1 million is 0.99999.

Step-by-step explanation:

We are given that one year, professional sports players salaries averaged $1.5 million with a standard deviation of $0.9 million.

Suppose a sample of 400 major league players was taken.

<em>Let </em>\bar X<em> = sample average salary</em>

The z-score probability distribution for sample mean is given by;

                 Z = \frac{ \bar X -\mu}{{\frac{\sigma}{\sqrt{n} } }} }  ~ N(0,1)

where, \mu = mean salary = $1.5 million

            \sigma = standard deviation = $0.9 million

             n = sample of players = 400

The Z-score measures how many standard deviations the measure is away from the mean. After finding the Z-score, we look at the z-score table and find the p-value (area) associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X.

So, probability that the average salary of the 400 players exceeded $1.1 million is given by = P(\bar X > $1.1 million)

    P(\bar X > $1.1 million) = P( \frac{ \bar X -\mu}{{\frac{\sigma}{\sqrt{n} } }} } >  \frac{ 1.1-1.5}{{\frac{0.9}{\sqrt{400} } }} } ) = P(Z > -8.89) = P(Z < 8.89)

<em>Now, in the z table the maximum value of which probability area is given is for critical value of x = 4.40 as 0.99999. So, we can assume that the above probability also has an area of 0.99999 or nearly close to 1.</em>

Therefore, probability that the average salary of the 400 players exceeded $1.1 million is 0.99999.

4 0
3 years ago
The ratio in fraction of 2.5/8 to 8. 3/4 as a fraction in simplest form
labwork [276]
The answer to your question would be, 22 31/32 because you would multiply 2 5/8 and 8 3/4. To=mutiply. Hope I helped:-)
3 0
3 years ago
Rewrite the following equation in standard form.<br><br> y= -5/8x− 7
Colt1911 [192]

Answer:


Step-by-step explanation:

y= -5/8x-7

To write in standard form get all the terms to one side

y+5/8x+7=0

I hope this is correct

Pls don't be mad if it is wrong


6 0
2 years ago
Write and solve the proportion.
Nonamiya [84]

Answer: I believe it would be 15.42

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Other questions:
  • Claire's lunch bill was $17.35. She gave a tip of $3.82. What percent did Claire leave as a tip?
    13·2 answers
  • The sample mean foot length of a simple random sample of 25 third-graders is 22.5 cm. The standard error of the mean is 0.8 cm.
    14·1 answer
  • FINALS QUESTION. ANSWER FAST! (choose rational or irrational for each one)
    10·1 answer
  • Ayee somebody help me on this plz real quick
    6·2 answers
  • What adds to be the bottom number but also multiplies to the top
    12·2 answers
  • What is fo cube root
    9·1 answer
  • A certain line has the equation ax + by = c where a&gt;0, b&lt;0, and c&lt;0. state the x- and y-intercepts, and the slope
    7·1 answer
  • I need all the answers for the whole paper
    15·1 answer
  • A bag contains balls numbered 1 to 20 if one is chosen at random what is the probability that it is prime
    10·1 answer
  • Help me out please! Anybody? I’m so confused
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!